Question

The electron mobility in N-type germanium is 3900cm^(2)//v-s and its conductivity is 6.24 mho//cm, then impurity concentration will be if the effect of cotters is negligible

Answer 1

Answer:

Charge concentration or impurity concentration is given as

$n = 10^{16} charge/cm^3$

Explanation:

As we know that the conductivity of the semiconductor is given as

$\sigma = ne\mu$

now here we will find the charge concentration

$n = \frac{\sigma}{e\mu}$

now we have

$n = \frac{6.24}{1.6 \times 10^{-19}(3900)}$

so we have

$n = 10^{16} charge/cm^3$

#Learn

Topic : Charge concentration in semiconductor

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